I have 5"25 speakers in the door behind the standard trim. They are Dynaudio.

All I did was to shorten the lugs at the back of the grille to stop them fouling the speaker and put a small spacer ring around the speaker to angle it upwards and pull the magnet away from the window (still a very tight fit).

Tweeters are currently attached to a bracket which is attached to the kick panels, will blend those in one of these days...

Anyway, the doors look completely standard and it sounds the proverbials, just wish I had sound deadened the doors, but that's .5s to 100 lost